Draft-gear.



, 0. ANDERSON.

DRAFT GEAR. APPLICATION TILED SEPT. 11, 1909,

Patented Apr. 5, 191% 2 SHEETS-SHEET 1.

O. ANDERSON.

DRAFT GEAR. I APPLICATION TILED SEPT. 11 1909.

Patented Apr. 5,.1910.

2 SHEETS-SHEET 2.

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OLOF ANDERSON, or CHICAGO, ILLINois.

DRAFT-GEAR.

To all whom it m concern:

Be it known that 1,-OL0F ANDERSON, a citizen of the United States,residing at Ohicago, in the county of Cook, a11d State of Illinois, haveinvented a new and useful Improvement in Draft-Gears, of which thefollowing is a specification.

My object isto provide certain improvements in the construction andarrangement of the spring-tensionihg follower details of railwaycar-body draftg'ears, with a view to interposing between" the drawbarand draft-s rings graduating mechanism which will, e ectrapidly-increasingspring-resistance, with attendant advantages, againstmovement of the drawbar in either direction.

It is further my object to provide a particularly strong, durable andeflicient construction for the purpose defined, which may be readilyapplied to car-bodies hitherto in use without necessitating any materialchange in the under-structure details of such bodies;

In the accompanying drawings, which show my invention applied to oneform of draftrig 'ing,-Figure 1 is a broken, partly plan an partlyplan-sectional view of so much of adraft-gear as is thought'necessaryfor a clear understanding of'the construction and operation of myimprovements,which are shown in normal position; Fig. 2, a view nearlysimilar in character to Fig. 1 and showing the position of moving partswhen the draftsprings are compressed; Fig. 3, an enlarged section online 3 in Fig. 2; Fight, an 'en-' larged perspective view of one of apair of follower-blocks; Fig. 5,. a similar view of one of a pair ofspring-caps; and Fig. 6, a

similar view of a rocker, or lever, interposed.

between the follower-blocks.

In the construct-ion shown, 7, T represent the center-sills of a car and-8 stationary angle-iron guides. Fastcned against the center-sills arethe stops, or brackets, 9, 10.

Bolts 11 pass through the anglebars and brackets 9 and 10, as indicated.

12 is the socket-strap, or yoke, of the draft-gear secured to the shankof the drawhead, in a common' manner. Seated nor mally against the stops9 1s a casting, or

follower-block, 13 having, as shown most i Specification of Letters IPatent.

atented Apr. 5, 1910.

Application filed' September 11, 1909. Serial No. 517,192.

is a spring-cap, 19 provided in its inner face with a spring-positioningboss 20 and in its.

outer face with a concave 'socket2l terminating at one edge in the lip22. Confined between the parts 13, "19 are the inner and outercompan1on-springs 23.

24 is {a follower-block seated normally against the stops 1Oandeorresponding in its details of construction with the followerblock13, described. ;Slidin'g against the block 24 is a spring-cap- 25,corresponding in all its details-with the cap 19 described. Between theparts 2 1, 25 are the innerand outer confined springs 26 correspondingin every way with the springs 23 described. The follower-blocks areslidingly mounted in the guides formed by the an -lesbars 8 and theupper and'lower sides of the yoke 12. The follower-blocks are. reversedwith relation to each other in the guides, wherethe socket 21 of thesprin -cap 19 is directly opposite the serrated face 16 of the block 2-1and the socket-portion 21 of the cap 25 is directly opposite theserrated face 16 of the block 13. Loosely mounted between thefollower-blocks is a lever, or

rocker, 27 shaped as indicated and formed When the follower-blocks arein relatively extended position against the stops 9, 10, the

lever 27 occupies the position shown in Fig. l, engaging thefollower-blocks near the outer ends of the faces 16. The parts are heldin this position by the tension of the springs 23,- 26. A pull upon thedrawbar 13 draws the rear endportion of the yoke 12 against thefollower-block 13, causing the lever 27 to move toward, or to, theposition shown in Fig. 2. While thus moving it con'ipresses the springs23, 26 andis turned on its axis by the approach of the serrated surfaces16. The rocker thus operates as a changing", .or shortening, lever,gradually increasing the effect of the resistance of the springs againstthe approach of the follower-blocks. The resistance against movement ofthe draw-head and drawbar,

therefore, is gradually increased, thereby caps and shiftably engagingsaid bearingtending to prevent sudden tensioning, or yielding, of thesprings with consequent jar in service.

In the movement of the drawbar in the direction to the right, in Figs. 1and 2, the follower-block 13 is pressed against the stops 9 and theother follower-block is moved in the direction thereof, effecting arocking of the lever 27, in the same manner as before described and withsimilar results. The serrations in the meeting faces 16,81 tend tosteady the rocking lever in itsmovements, but they may be dispensedwith-if desired. The rocking lever and followerblocks are held securelyagainst removal by the angle-iron guides 8 and upper and lower, or side,bars of the yoke 12.

The concavo-convex meeting faces 21, 30 oll'er material frictionalresistance to the movements of the lever. This is an importantadvantage, for the reason, more especially, that it tends to retard thereturn of the parts to normal position and thus, in a large measure,neutralizes or absorbs shock against the stops 9, 10. I

My improvement may be variously modifiedin the matter of details ofconstruction to adapt it for example to different types ofdraft-riggings, without departing from the spirit of my invention asdefined byithe claims.

lVhat I claim as new and desire to secure by Letters Patent is 1. In adraft-gear, the combination of a pair of opposed follower-blocks, eachpresenting a bearing-face and carrying a draftspring and a draft-springcap, and a rocking-lever interposed between the follower-- blocks inengagement with said draft-spring faces, the lever operating by shiftingunder the spring-teusioning movement of a follower-block to graduallyincrease the spring resistance against said movement, for the purposeset. forth.

2. In a draft-gear, the combination of a pair of opposedfollower-blocks, each presenting a bearing-face and carrying adraftspring and a draft spring cap, and a rocking-lever interposedbetween the followerblocks in frictional turning engagement with saiddraft-spring caps and shiftably engaging said bearing-faces, the leveroperating by shifting under the spring-tensioning movement of afollower-block to gradually increase the spring resistance against saidmovement, and the engagement of the lever and spring caps producingfrictional resistance against movement of the follower block, for thepurpose set forth.

In a draft-gear, the combination of a pair of opposed follower-blocks,each presenting a serrated bearing-face and carrying a draft-spring anda draft-spring cap, and

a rocking-lever interposed between the follower'blocks having convexportions engaging said spring caps and serrated face-pen tions engagingsaid serrated bearingfaces, the lever operating by shifting under thespring-tensioning movement of a follo\ ver-v block to gradually increasethe spring resistance against said movement, and the serratedengaging-faces preventing undue slip between the lever andfollower-blocks, for the purposese't forth.

' OLOF ANDERSON. In presence of- K. M. CORNWALL.

R. A. SCHAEIER.

